16720e7dfab79a7f60e91f0cb102a213c3e4738a
max
  Fri Apr 28 15:39:08 2017 -0700
first big commit for hgGeneGraph. Others will follow as QA progresses.  refs #13634

diff --git src/hg/hgGeneGraph/README.txt src/hg/hgGeneGraph/README.txt
new file mode 100644
index 0000000..2a918fa
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+++ src/hg/hgGeneGraph/README.txt
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+The gene graph viewer has three dependencies:
+
+- the "dot" binary from the graphviz package. It requires a rather recent graphviz version.
+  The exact location can be specified with the hg.conf option graphvizPath.
+- the Python2.7 kent-like library "hgLib" from ../pylib
+- the Python 2.7 library "MySQLdb". The makefile in ../pylib will add it to CGI-BIN, as a fallback
+
+The gene graph tables are created with the ggTables command. ggTables parses input files
+constructed with various gg* commands, ggGpmlToTag, ggKgmlToTab, ggMsrToTab,
+ggPidToTab, ggPpiToTab, ggSpfToTab. These tables are loaded into hgFixed, the prefix of all
+tables is "gg". The main table is "ggLink".
+
+See the makeDoc and /hive/data/genomes/hg19/bed/interactions/